Frederick Cowan & Company Inc. - Manufacturer of Industrial Burner Equipment, Engineering Solutions for over 50 years
Direct Energy Ignitors
Customized Spark Plugs
Fuel, Gas & Oil Ignitors
Customized Burners Front Packages
Flame Scanners
Corona ARC Power Packs
- First & Second Evolution
  Ignition Circuit Technology
Corona ARC & Power ARC
- Latest Technology
Live-ForEver ARC Conduit

Corona Arc Spark Plug & Power Arc Ignitor

With over 50 years of expert experience, we can handle your Flame Scanner concerns using these commercially available Flame Scanners integrated into our equipment.

Since 1966 we have been manufacturing the “PowerArc” Ignitor and, over the years, have supported the many customers using this hardware.  Today, the PowerArc Ignitor is one of a number of commonly available products called 'Direct Energy Ignitors' that all need a specially “coated” sparkplug.

In 19996 we introduced the “CoronaArc” line of Ignitors in anticipation of the market need for a high availability product capable of working at 2,000 deg. F.  The “CoronaArc Circuit” is  unique Patented Capacitor Discharge Ignition Circuit designed to deliver pulsating High Current Arcs to “burn” through contaminates and reliably deliver Ignition to Industrial Burners and Fuel Ignitors.

Now, present in 2002, highly successful operating experience has now been gained in a variety of demanding applications thereby fulfilling the original research and development goals to transformation our industry and create unheard of possibilities for our customers.

& Maintenance Manual
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CoronaArc Circuit EvolutionCoronaArc Circuit Evolution:

Original PowerArc Circuit:

The accompanying schematic is a conceptual representation of our original PowerArc Circuit.  Current from a 2,000 volt transformer is rectified and charges a storage capacitor.  Next to this capacitor, on the output side, is a spark gap that is also referenced to ground potential by way of the semiconductor at the“Arc-Probe”.  When the capacitor reaches 2,000 volts, the Spark Gap, being set at the voltage, breaks down and effectively becomes a closed switch.  Once the Spark Gap is shunted, the full Amperage Potential of the capacitor is delivered to the Firing End of the “Arc Probe”.  This is the Pulsed Arc that “burns through” contaminates.
CoronaArc Circuit EvolutionNEW CoronaArc Circuit :

The Heart of the CoronaArc circuit is focused on the Firing End.  The circuit is much the same as the PowerArc except the semiconductor material is eliminated.  A second high voltage “transformer” and a supporting diode is added to create a continuous High Voltage DC Spark at the Firing End of the Ignitor Electrode.  The existence of this spark current at the Surface of the Ignitor Electrode becomes the means by which the Spark Gap is referenced to ground potential and concurrently is the directed pathway by which the stored energy of the capacitor discharges a High Current Arc.  In other words, we create a High Voltage spark at the firing end of the electrode, and the Capacitor part of the circuit pulsates a High Current Arc through it.
CoronaArc Circuit EvolutionCoronaArc Spark Plug:

The CoronaArc system eliminates the use of a SEMICONDUCTOR on the firing end; yet it delivers a superior pulsating High Current Non-Fouling Ignition Arc.  As a result of this Semiconductor Free design, a whole new world of ignition potentials open up.  Proprietarily produced at our facility, we maintain the flexibility to manufacture a variety of probe diameters and mounting configurations.  We even have a few 500 psi models rated at Full Temperature Potential. 

In Summary...

  • Continuous High Temperature Exposure: 2,000 deg. F.
  • More Power: No semi-conductor to absorb energy
  • Reliability: Non semi-conductor “electric” seal to fail
  • Unrivaled: Protruding fuel-grabbing electrode arrangement with superior alloys
  • Flexible Design: Available in many sizes and mounting configurations
  • Industrial Transformation: Low maintenance Non-Retract Ignition Potential.

Examples of High Temperature Applications

Two examples of how the CoronaArc increases reliability and saves on complexity, maintenance costs, and operational downtown:

As seen in the illustration, the CoronaArc can be permanently placed in a high temperature radiant heat zone on Modern LowNox Burners and obtain reliable ignition.  This is because there is combustible fuel swirling in front of the diffuser that is separate from the main fuel pattern and it is in a stagnation zone that facilitates flame propagation.  The CornaArc Ignition Tip survives because it is not in direct contact with the main fuel spray.  It sees the same radiant heat as the diffuser and it endures without needing retraction because it is made of similar materials.

Even on the most intense Fuel Ignitors (such as used on Coal Burners), the CoronaArc Ignition electrode can be placed in direct contact with the fuel because the net temperature is still less than the probe's 2,000 Oil Ignitors, the “Spark” of the CoronaArc will reliably light them.
Servicing the Industrial Market Place Since 1957
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